|
Abstract From the process of frost heaving behaviors of deep foundation pit，the studies including nonlinear finite element simulation analysis，model experiment and in-situ test while considering the balance of initial ground stress and its thermo-mechanical coupling analysis are given. The frozen mechanics and deformation of waterproof curtain including frozen heaving features and its relationships with freezing soil properties and constraint conditions are presented. Also，the unloading mechanism and deformation-reducing effects of stress relief slot in deep foundation pit of soft soil are proposed. Research achievements from calculation analysis of practical projects may provide theoretical basis for reasonable design and safe construction of similar projects in the future dense popularization regions.
|
|
Received: 24 May 2009
|
|
|
|
